Velenjsko Jezero
Velenjsko Jezero in Unknown, Slovenia has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 8.3 m visibility. Phosphorus: 53 µg/L.
- Clarity
- 8.3 m
Why Velenjsko Jezero has no A–F grade
Velenjsko Jezero in Slovenia is published with the authority's own measurements, not a LakeQuality letter. official authority class; not a LakeQuality A–F letter Sampling here has recorded water clarity and phosphorus, but not algae (chlorophyll-a).
A letter on the LakeQuality scale would be an invention, not an official class. Everything below that has been measured is still reported on this page.
Monitoring: the Slovenian Environment Agency (ARSO), via UNEP GEMS/Water.
Velenjsko Jezero is a lake in Unknown County, Slovenia.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2022-11-14. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Velenjsko Jezero
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Crystal clear, you can see 27.2 ft down. Phosphorus level: 53 µg/L. Trophic State Index: 45.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8.3 m | Not graded |
| Phosphorus | 53 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Velenjsko Jezero
Compare lakeside cabins, hotels, and vacation rentals near Velenjsko Jezero in Unknown, Slovenia — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
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Fishing Velenjsko Jezero
Frequently asked questions about Velenjsko Jezero
What is the water quality of Velenjsko Jezero?
- Velenjsko Jezero in Unknown, Slovenia has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 8.3 m visibility. Phosphorus: 53 µg/L.
Is Velenjsko Jezero safe to swim in?
- Velenjsko Jezero has official nutrient and clarity measurements, not a bacteria swim class and not a safety clearance. Algal blooms, currents, and depth are not covered. Always check local notices before swimming.
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Where this data comes from
8 measurements from 1 monitoring station, 2022. Retrieved from UNEP GEMS/Water GFQA (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- European Environment Agency
europeanenvironmentagenc8 samples · —
Analytical methods
- GEMStat OPEN / CC BY 4.0
Monitoring station identifiers (1)
SVN00010
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See methodology and data sources.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2022-11-14
Monitoring stations: 1